1887391290688 has 112 divisors (see below), whose sum is σ = 3987004919040. Its totient is φ = 885238142976.

The previous prime is 1887391290647. The next prime is 1887391290689. The reversal of 1887391290688 is 8860921937881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1887391290689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7330278 + ... + 7583386.

Almost surely, 2^{1887391290688} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1887391290688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1993502459520).

1887391290688 is an abundant number, since it is smaller than the sum of its proper divisors (2099613628352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1887391290688 is a wasteful number, since it uses less digits than its factorization.

1887391290688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253272 (or 253262 counting only the distinct ones).

The product of its (nonzero) digits is 83607552, while the sum is 70.

The spelling of 1887391290688 in words is "one trillion, eight hundred eighty-seven billion, three hundred ninety-one million, two hundred ninety thousand, six hundred eighty-eight".